Bar to psi conversion
Pressure from bar to psi (pound-force per square inch) and back, with the exact factor.
Result
Converted value
14.5038 psi
- Formula
- 1 bar = 14.503 773 77 psi
Calculation, assumptions and sources
OverviewConversion both ways between the bar, the usual pressure unit in Europe, and the psi, usual in the US and UK.
Conversion both ways between the bar, the usual pressure unit in Europe, and the psi, usual in the US and UK. The exact factor is shown below the result.
Method & formulas1 bar = 14.5037738 psi
1 bar = 14.5037738 psi1 psi ≈ 0.0689476 bar
The bar-psi factor is exact: the pound-force and the inch are defined exactly.
- Bar
- 1 bar = 100,000 pascals exactly.
- Psi
- pound-force per square inch.
Validity domainA tyre gauge or a compressor usually shows gauge pressure, above atmospheric pressure.
A tyre gauge or a compressor usually shows gauge pressure, above atmospheric pressure. The factor is the same for gauge and absolute pressure, but two values only compare within the same convention.
Example: car tyre pressureA tyre pressure of 2.3 bar is about 33.4 psi (2.3 × 14.5037738 ≈ 33.4).
A tyre pressure of 2.3 bar is about 33.4 psi (2.3 × 14.5037738 ≈ 33.4).